How to Remove Libelous Information from Web Sites?

Three years ago, my wife was arrested for forgery and attempted prescription fraud. The forgery charge was dismissed prior to arraignment, but media statewide published the fact that she had been charged with this felony on their web sites. The state never pursued anything to do with the forgery, yet that fact still exists on at least two web pages. For 1.5 years, she has pursued gainful employment but cannot get a call back. One of the companies she applied to indirectly indicated to me that the reason her application was dismissed was due to the news articles claiming she had been arrested for forgery. Both sites have been asked, in writing, to remove the articles from their archives and both have declined to do so. By their keeping this misinformation about my wife available to anyone conducting a search of her name, is it not libelous on their part each time someone sees that misinformation, when the owners/ publishers of those two sites have been advised and have access to court records knowing that the forgery charge was dismissed?==========================================

I understand that my question may be posted in Internet Law Forum. :Yes